Seleção de progênies de cafeeiros do grupo catucaí

Abstract

The coffee tree genetic improvement has brought expressive profit to the activity through the use of cultivars with high productivity and favorable agronomic traits. The main goal of the improvement programs is to reunite the best characters in a cultivar. So it searched to select the coffee tree progenies for favorable characteristics of productivity, grains size, vegetative vigor and rust resistance. The experiment was conducted at the EPAMIG Experimental Farm, in Três Pontas – Minas Gerais, which were used 36 treatments that 33 progenies derived from a cross among cultivars of the group Icatu and Catuaí and 3 commercial cultivars (Catuaí Amarelo IAC 62, Catucaí Amarelo 2 SL and Icatu Precoce IAC 3282). The square lattice 6x6 with 3 repetitions was the experimental design adopted, and the assessments were made during 4 crops (2009/10, 2010/11, 2011/12 and 2012/13). The characteristics tested were: average productivity (bags ha-1), percentage of fruit retained in sieve 17 up, vegetative vigor, incidence and rust severity. The treatments presented variability for productivity characteristics, grain size, incidence and rust severity. The progenies H 6-47-10 Cv 3 and H 4-35-11 Cv 10 presented superior productivity to the other progenies and cultivars with favorable characteristics of grain size and vegetative vigor, but were allocated in the group with higher rust infestation. The progenies H MS Cv 13 and H MS Cv 11 noteworthy, because in addition to having high productivity and good vegetative vigor is allocated in the progenies group with lower rust infestation. Regarding the grain size are positioned in the same group as the cultivars Catuaí Amarelo IAC 62 and Catucaí Amarelo 2SL.